/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package control.servlet;

import control.Connection;
import control.UserDAO;
import java.io.IOException;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import model.InvalidValueException;
import model.User;
import utils.DateUtils;

/**
 *
 * @author fred
 */
public class NewUser extends HttpServlet {

    private boolean checkParameter(String parameter) {
        return (parameter != null) && (!parameter.equals(""));
    }
    
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        
        HttpSession session = request.getSession();
        
        String login        = request.getParameter("login");
        String name         = request.getParameter("name");
        String password     = request.getParameter("password");
        String email        = request.getParameter("email");
        String birthDateStr = request.getParameter("birthDate");
        
        if (!checkParameter(login) || !checkParameter(name) || !checkParameter(password)
                || !checkParameter(email) || !checkParameter(birthDateStr)) {
            session.setAttribute("message", "The register has not been "
                    + "successfully accomplished!<br />Please check the "
                    + "informations and try again.");
            response.sendRedirect("index.jsp");
        }
        else {
            try {
                Date birthDate = new SimpleDateFormat(DateUtils.dateFormat).parse(birthDateStr);
                User user = new User(login, password, name, email, birthDate);
                
                Connection con = new Connection();
                UserDAO userDAO = new UserDAO(con);
                
                // Logs the user in if the registration was sucessfully
                if (userDAO.insertUser(user)) {
                    session.setAttribute("user", user);
                }
                else {
                    session.setAttribute("message", "Login already in use. Try "
                            + "another one.");
                }
            } catch (ClassNotFoundException ex) {
                session.setAttribute("message", "Problem accessing the database "
                        + "with following message: " + ex.getMessage());
            } catch (SQLException ex) {
                session.setAttribute("message", "Problem accessing the database "
                        + "with following message: " + ex.getMessage());
            } catch (ParseException ex) {
                session.setAttribute("message", "Invalid date. It must be in the"
                        + " format \"" + DateUtils.dateFormat + "\"");
            } catch (InvalidValueException ex) {
                session.setAttribute("message", ex.getMessage());
            } finally {
                response.sendRedirect("index.jsp");
            }
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
